body {
    background:url(../images/bg.jpg) no-repeat;
    background-size: 100% 100%;
    z-index: -1;
}

#login .layui-input-icon
{
    padding-left: 38px;
}

#login .username
{
    background:url(../images/user.png) no-repeat 0 0;
    background-position: 7px 7px;
}

#login .password
{
    background:url(../images/lock.png) no-repeat 0 0;
    background-position: 7px 7px;
}

#login .captcha
{
    background:url(../images/key.png) no-repeat 0 0;
    background-position: 7px 7px;
}

#login .captcha-img, #code
{
    height: 38px;
    width: 50%;
    float: left;
}

#code 
{
    text-align: center;
    font-weight: bold;
    border: none;
    margin-left: 10%;
    min-width: 100px;
}